Can't start vm after creating snapshot

[Leslie Jensen]

Hello
I'm running a FreeBSD 8.0-RELEASE-p2 system with virtualbox-ose-3.1.2_1 
and virtualbox-ose-kmod-3.1.2_1 installed.

My Windows 7 guest will not start if I create a snapshot.

It stops and a little red indicator says that the vm was aborted.


If I remove the snapshot I'll have to start once in fail safe mode then 
I can start the vm normally again.

Have I struck on a known bug or has anyone a suggestion on how to solve 
this issue?

Thanks

/Leslie